Add gosimple lint

Signed-off-by: Daniel Nephin <dnephin@docker.com>

cli/command/container/exec.go

@@ -111,12 +111,7 @@ func runExec(dockerCli command.Cli, options *execOptions, container string, exec
 			Tty:    execConfig.Tty,
 		}
 
-		if err := client.ContainerExecStart(ctx, execID, execStartCheck); err != nil {
-			return err
-		}
-		// For now don't print this - wait for when we support exec wait()
-		// fmt.Fprintf(dockerCli.Out(), "%s\n", execID)
-		return nil
+		return client.ContainerExecStart(ctx, execID, execStartCheck)
 	}
 
 	// Interactive exec requested.

cli/command/container/opts.go

@@ -23,7 +23,7 @@ import (
 )
 
 var (
-	deviceCgroupRuleRegexp = regexp.MustCompile("^[acb] ([0-9]+|\\*):([0-9]+|\\*) [rwm]{1,3}$")
+	deviceCgroupRuleRegexp = regexp.MustCompile(`^[acb] ([0-9]+|\*):([0-9]+|\*) [rwm]{1,3}$`)
 )
 
 // containerOptions is a data object with all the options for creating a container

cli/command/formatter/disk_usage.go

@@ -65,7 +65,7 @@ reclaimable: {{.Reclaimable}}
 }
 
 func (ctx *DiskUsageContext) Write() (err error) {
-	if ctx.Verbose == false {
+	if !ctx.Verbose {
 		ctx.buffer = bytes.NewBufferString("")
 		ctx.preFormat()
 

cli/command/service/logs.go

@@ -164,7 +164,7 @@ func runLogs(dockerCli *command.DockerCli, opts *logsOptions) error {
 
 // getMaxLength gets the maximum length of the number in base 10
 func getMaxLength(i int) int {
-	return len(strconv.FormatInt(int64(i), 10))
+	return len(strconv.Itoa(i))
 }
 
 type taskFormatter struct {

cli/command/service/opts.go

@@ -354,7 +354,7 @@ func convertNetworks(ctx context.Context, apiClient client.NetworkAPIClient, net
 		if err != nil {
 			return nil, err
 		}
-		netAttach = append(netAttach, swarm.NetworkAttachmentConfig{Target: net.Target, Aliases: net.Aliases, DriverOpts: net.DriverOpts})
+		netAttach = append(netAttach, swarm.NetworkAttachmentConfig(net))
 	}
 	sort.Sort(byNetworkTarget(netAttach))
 	return netAttach, nil

cli/command/stack/deploy_composefile.go

@@ -134,10 +134,7 @@ func getConfigDetails(composefile string) (composetypes.ConfigDetails, error) {
 	// TODO: support multiple files
 	details.ConfigFiles = []composetypes.ConfigFile{*configFile}
 	details.Environment, err = buildEnvironment(os.Environ())
-	if err != nil {
-		return details, err
-	}
-	return details, nil
+	return details, err
 }
 
 func buildEnvironment(env []string) (map[string]string, error) {

cli/command/stack/list.go

@@ -69,7 +69,7 @@ func getStacks(ctx context.Context, apiclient client.APIClient) ([]*formatter.St
 	if err != nil {
 		return nil, err
 	}
-	m := make(map[string]*formatter.Stack, 0)
+	m := make(map[string]*formatter.Stack)
 	for _, service := range services {
 		labels := service.Spec.Labels
 		name, ok := labels[convert.LabelNamespace]

cli/command/system/info.go

@@ -263,7 +263,7 @@ func prettyPrintInfo(dockerCli *command.DockerCli, info types.Info) error {
 	if info.RegistryConfig != nil && (len(info.RegistryConfig.InsecureRegistryCIDRs) > 0 || len(info.RegistryConfig.IndexConfigs) > 0) {
 		fmt.Fprintln(dockerCli.Out(), "Insecure Registries:")
 		for _, registry := range info.RegistryConfig.IndexConfigs {
-			if registry.Secure == false {
+			if !registry.Secure {
 				fmt.Fprintf(dockerCli.Out(), " %s\n", registry.Name)
 			}
 		}

cli/compose/convert/service.go

@@ -563,9 +563,6 @@ func convertCredentialSpec(spec composetypes.CredentialSpecConfig) (*swarm.Crede
 	if spec.File != "" && spec.Registry != "" {
 		return nil, errors.New("Invalid credential spec - must provide one of `File` or `Registry`")
 	}
-
-	return &swarm.CredentialSpec{
-		File:     spec.File,
-		Registry: spec.Registry,
-	}, nil
+	swarmCredSpec := swarm.CredentialSpec(spec)
+	return &swarmCredSpec, nil
 }

cli/config/credentials/native_store.go

@@ -73,7 +73,7 @@ func (c *nativeStore) GetAll() (map[string]types.AuthConfig, error) {
 		if err != nil {
 			return nil, err
 		}
-		ac, _ := fileConfigs[registry] // might contain Email
+		ac := fileConfigs[registry] // might contain Email
 		ac.Username = creds.Username
 		ac.Password = creds.Password
 		ac.IdentityToken = creds.IdentityToken

cli/internal/test/store.go

@@ -53,8 +53,7 @@ func (c *fakeStore) Get(serverAddress string) (types.AuthConfig, error) {
 	if c.getFunc != nil {
 		return c.getFunc(serverAddress)
 	}
-	authConfig, _ := c.store[serverAddress]
-	return authConfig, nil
+	return c.store[serverAddress], nil
 }
 
 func (c *fakeStore) GetAll() (map[string]types.AuthConfig, error) {

gometalinter.json

@@ -1,6 +1,6 @@
 {
   "Vendor": true,
-  "Deadline": "5m",
+  "Deadline": "8m",
   "Sort": ["linter", "severity", "path"],
   "Exclude": ["cli/compose/schema/bindata.go"],
 
@@ -11,6 +11,7 @@
     "gofmt",
     "goimports",
     "golint",
+    "gosimple",
     "ineffassign",
     "interfacer",
     "lll",

opts/weightdevice.go

@@ -75,12 +75,7 @@ func (opt *WeightdeviceOpt) String() string {
 
 // GetList returns a slice of pointers to WeightDevices.
 func (opt *WeightdeviceOpt) GetList() []*blkiodev.WeightDevice {
-	var weightdevice []*blkiodev.WeightDevice
-	for _, v := range opt.values {
-		weightdevice = append(weightdevice, v)
-	}
-
-	return weightdevice
+	return opt.values
 }
 
 // Type returns the option type